$188 Cheap Delta flights Philadelphia (PHL) to Knoxville (TYS)

Set the “Price (lowest to highest)” filter on Expedia to look for cheap Delta Air Lines return flights from $343 from PHL to TYS. Affordable one-way tickets from $188 are also available.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Browse for round-trip or one-way flights to Knoxville in January or December. You could find cheaper fares with Delta Air Lines during these off-season months.

Start searching one to three months ahead of your departure date to find cheap fares on Delta Air Lines flights from Philadelphia Intl. Airport (PHL) to McGhee Tyson Airport (TYS). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing spot on, and you can enjoy significant savings on domestic journeys.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Click on our “Nonstop” filter when looking for direct Delta Air Lines flights from PHL to TYS. It’s also a good way to compare other carriers offering the same nonstop route.

To find the earliest departures from PHL to TYS with Delta Air Lines, filter your results by “Early Morning” and “Morning.” Choosing an early flight usually means you’re less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

McGhee Tyson Airport (TYS) is the main Knoxville gateway for Delta Air Lines flights from Philadelphia Intl. Airport (PHL).

With a rewarding loyalty program and an excellent in-flight experience, Delta Air Lines is a top choice for many travelers heading from PHL to TYS. What’s more, if you’re a Delta SkyMiles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which you can put toward future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Typically, you can cancel or reschedule your flight, although there may be additional charges if your booking was made more than 24 hours ago. Need flexible options? Make use of Expedia’s “Changes included” or “No cancel fee” filter to find flights that won’t charge you extra if you need to adjust your plans. To update your itinerary, head to “Trips,” select your flight and click on “Manage Booking” for more details.